Finding the Third Proportional to 70,458 and 148,297.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,458 : 148,297.50 = 148,297.50 : x
2. Step 2: Convert to fraction form
   70,458/148,297.50 = 148,297.50/x
3. Step 3: Cross multiply
   70,458x = 148,297.50 × 148,297.50
4. Step 4: Simplify right side
   70,458x = 21,992,148,506.25
5. Step 5: Solve for x
   x = 21,992,148,506.25/70,458
6. Step 6: Final answer
   x = 312,131.32